Answer to Question 1
C
Explanation: A) PMN is one of the names of a neutrophil, not a red blood cell.
B) ABO is a blood group, not a red blood cell.
C) Correct
D) CD4 is a type of leukocyte, not a red blood cell.
Answer to Question 2
C
Explanation: A) There are no medical word parts that mean brighten.
B) There are no medical word parts that mean enlighten.
C) Correct
D) There are no medical word parts that mean presence.